Security + Cryptography
CRYPTOGRAPHY
- 1.Which of the following is not one of the three main categories of cryptography?
- A.
Steganography
- B.
Physical
- C.
Mathematical
- D.
Quantum
- 2.Which type of cipher is a simple coding system that changes one character or symbol into another?
- A.
Reverseography
- B.
Steganography
- C.
Transposition
- D.
Substitution
- 3.Which of the following is a hexadecimal value that is computed to verify authenticity?
- A.
Mince
- B.
Checksum
- C.
Denomination
- D.
Integer
- 4.If security is a real concern on your network, what length do most experts recommend as the minimum for password length?
- A.
10
- B.
9
- C.
8
- D.
6
- 5.Which of the following involves looking at blocks of an encrypted message to determine whether any common patterns exist?
- A.
Quantum cryptography
- B.
Algorithm errors
- C.
Frequency analysis
- D.
Brute-force attacks
- 6.Which of the following is the process of converting a message into a numeric value?
- A.
Hashing
- B.
Digitizing
- C.
Conversion
- D.
Reassignment
- 7.Which of the following is not one of the three most common versions of Message Digest Algorithm (MDA)?
- A.
MD2
- B.
MD3
- C.
MD4
- D.
MD5
- 8.Which of the following is an update to Secure Hash Algorithm (SHA)?
- A.
SHA-1
- B.
SHA2
- C.
SHB
- D.
SHAA
- 9.What bit hash value does Secure Hash Algorithm (SHA) produce?
- A.
96
- B.
128
- C.
160
- D.
256
- 10.What bit hash value does MD5 produce?
- A.
96
- B.
128
- C.
160
- D.
256
- 11.Symmetric algorithm encryption methods use either of which two ciphers? (Choose two.)
- A.
Block
- B.
Stream
- C.
Character
- D.
Bit
- 12.Which type of cipher involves the hiding of one message within another?
- A.
Reverseography
- B.
Steganography
- C.
Transposition
- D.
Substitution
- 13.Which of the following was developed by a Swiss consortium and uses a 128-bit algorithm key for symmetric encryption?
- A.
IDEA
- B.
CAST
- C.
Blowfish
- D.
RC5
- 14.Which of the following is an asymmetric algorithm based on calculating logarithms?
- A.
ECC
- B.
Diffie-Hellman
- C.
El Gamal
- D.
RSA
- 15.Which of the following is derived from the message and a key and is used to verify the integrity of a message?
- A.
MAC
- B.
BDC
- C.
ERC
- D.
CDC
- 16.Which of the following is not a key component of PKI?
- A.
CA
- B.
LRB
- C.
RSA
- D.
RA
- 17.Which is named after the creators and uses a 40-bit to 128-bit key for symmetric encryption?
- A.
IDEA
- B.
CAST
- C.
Blowfish
- D.
RC5
- 18.Which of the following is a form of encryption based on the characteristics of the smallest particles known?
- A.
Quantum cryptography
- B.
Algorithm errors
- C.
Frequency analysis
- D.
Brute-force attacks
- 19.What is the primary difference between an RA and LRA?
- A.
The LRA saves the CA from responding to so much traffic.
- B.
The LRA can route requests to more than one CA.
- C.
The LRA can be used to identify or establish the identity of an individual.
- D.
The LRA is available only on the LAN, while the CA is available on the WAN.
- 20.What is the most popular version of X.509?
- A.
Version 5
- B.
Version 3
- C.
Version 2
- D.
Version 1
- 21.Which of the following is a statement that the CA uses to issue certificates and implement the policies of the CA?
- A.
CTP
- B.
CRL
- C.
CPS
- D.
CNS
- 22.Which of the following is not one of the main types of trust models used with PKI?
- A.
Hierarchical
- B.
Bridge
- C.
Mesh
- D.
Star
- 23.Which of the following is based on the idea of using large integer numbers for the basis of asymmetric encryption?
- A.
ECC
- B.
Diffie-Hellman
- C.
El Gamal
- D.
RSA
- 24.Which of the following is a 64-bit block cipher?
- A.
IDEA
- B.
CAST
- C.
Blowfish
- D.
RC5
- 25.In which PKI trust model does a root CA at the top provide all the information to intermediate CAs?
- A.
Hierarchical
- B.
Bridge
- C.
Mesh
- D.
Hybrid
Questions: 17 | Attempts: 7411 | Last updated: Mar 7, 2013
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Sample QuestionAsymmetric key cryptography is used for all of the following except:
Questions: 15 | Attempts: 450 | Last updated: Feb 1, 2021
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Sample QuestionIn the RSA algorithm, we select 2 random large values ‘p’ and ‘q’. Which of the following is the property of ‘p’ and ‘q’?
Questions: 6 | Attempts: 438 | Last updated: Dec 9, 2019
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Sample QuestionJim and Joe work at Crypty Solutions Inc. They want to share messages in a secure way where it is immune to attacks. What do you think Jim and Joe should implement?
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